Loom pick-finder.



'UNiTnn sTATns PATENT FETCH.

& KNOWLES LOOM WORKS, A CORPORATION OF MASSACHUSETTS.

Loom PICK-FINDER.

Speecation of Letters Patent.

Patented May 14, 1907.

Application filed June 20,1906. Serial No. 322.589.

To a/ZZ whom t may concern:

Be it known that I, EPPA H. RYON, a citizen of the United States,residing at Worcester, in the county of Worcester and State ofMassachusetts, have invented certain new and useful Improvements in LoomPick- Finders, of which the following is a specification. A

My invention relates to pick finder mechanism for looms, and`particularly to that class of looms in which the movement of theharnesses is controlled by a vdobby pattern chain, and the reversingmechanism for the pattern chain consists of two bevel gears loose on ashaft, meshing with a driven bevel gear, and a clutch splined on saidshaft, and movable thereon into engagement with one or the other of saidtwo bevel gears.

In this class of looms it is necessary, before reversing the patternchain cylinder to lind the pick, to turn the pattern chain cylinder backone pick, and also to turn the pattern chain cylinder forward one pick,after finding the pick.

The object of my invention is to provide a supplemental mechanism,adapted to be combined with the reversing mechanism above described, bymeans of which the weaver at one operation or movement, will manuallyturn the pattern chain cylinder back one pick, and operate the reversingmechanism, or turnthe pattern chain cylinder forward one pick, andoperate the revers ing mechanism.

My invention consists in certain novel features of construction of myimprovements, as will be hereinafter fully described.

I have only shown in the drawing a detached portion of a loom, and of adobby mechanism, and of the reversing mechanism referred to, with myimprovements combined therewith., sufficient to enable those skilled inthe art to understand the construction and operation thereof.

Referring to the drawings Figure 1 is an end view of portions of thehead of a loom, detached, and the dobby mechanism and the reversingmechanism, and my improvements combined therewith, and, Fig. 2 shows apart of the mechanism shown in Fig. 1, detached, and in anotherposition.

In the accompanying drawing, 1 is a loom side or frame. 2 is the crankshaft, 3 a gear fast thereon, which meshes with and rotates a gear 4loosely mounted on a stud, not shown. Attached to the gear 4 is a bevelgear 5, which meshes with and rotates a bevel gear 6, fast on an uprightshaft 7 mounted in suitable bearings 8 and 9. The upper part of theshaft 7 has fast thereon a bevel gear 10, which meshes with and rotatestwo bevel gears 11 and 12, both loosely mounted on the shaft 13, whichhas bearings 14 on the dobby stand or frame 15.

The shaft 13 has fast on one end, in this instance the left hand end, abevel gear 16, which meshes with and rotates a bevel gear 17 fast onashaft 18, which has a worm 19 fast thereon, which meshes with androtates a worm gear 20 fast on the shaft 21 on the dobby cylinder 22. Onthe shaft 13, between the gears 11 and 12, is splined a clutch 23, whichis adapted to be moved longitudiy nally on the shaft 13, and intoengagement with either one of the gears 11 or 12, to attach either oneof said gears to said shaft 13,

to cause said shaft to rotate in one direction or the other, through thedriven gear 10 on the shaft 7 meshing with the gears 11 and 12.

The clutch 23 may be moved into its intermediate position, between thegears 11 and 12, in which position it will not engage either gear, andboth gears will be loose on the shaft 13.

All of the above described parts may be of the usual and well knownconstruction.

I will now describe my improvements.

A stand 24 is in this instance secured to the dobby frame 15, andcarries a stud 25, on which is loosely mounted a segmental bevel gear26, having in this instance an operating handle 27. this instanceextends back of and in the path of, and is adapted to engage a bevelpinion 28 fast on the shaft 13 to rotate said pinion and the shaft 13 inone direction or the other, according to the direction of movement ofthe segmental gear 26 through the movement of the handle 27. Thesegmental gear 26 has a curved slot or opening 26/ therein, thecurvature of which, intermediate its ends is concentric with the aXis ofthe gear 26, and each end of the slot 26 has an offset portion. A pin 30on a lever 30, pivoted in this instance at its upper end on a pin 31 onthe stand 24, extends into the slot 26 in the gear 26. The

The segmental bevel gear 26 in IOO lower end of the lever 30 hasadjustably secured, in an elongated slot 30 therein, a headed bolt 32,which is adapted to be engaged by one of two recesses 33 in one end of ayielding or give-way connector 34, comprising in this instance a bar 34,and a rod 34, adapted to move longitudinally in openings in said bar 34and yieldingly connected therewith, in this instance by two helicallycoiled expansion springs 34 bearing at one end against the bar 34 and attheir other ends against a collar 34 fast on the rod 34. The rod 34 ispivotally connected to one end of the clutch lever 35, which ispivotally mounted at its other end on a stud 36 in a stationary stand37. The clutch lever 35 has a pin 35 thereon, which extends into anannular groove 23 in the clutch 23. t

i When the give-way connector 34, intermediate the clutch lever' 35 andthe lever 30, has its outer recess 33 connected with the bolt 32 on thelever 30, as shown in the drawing, the movement of the. segmental bevelgear 26 in one direction, from one extreme position to the other, will,through the pin 30 traveling in the slot 26 in said gear, move theclutch lever 35, through the connector 34, to one extreme position, asshown in Fig. 1.

The movement of the segmental bevel gear 26 in the other direction toits eXtreme position, as shown in Fig. 2, will move the clutch lever 35and clutch 23 to its other extreme position. I i

The operation of my improvements, from the above description inconnection 'with the drawing will be readily understood by those skilledin the art.

Vhen it is desired to reverse the movement of the dobby pattern chaincylinder, the handle 27 of the segmental bevel gear 26 is moved, tocarry the segmental bevel gear 26 from one eXtreme position, its normalposition, shown in Fig. 2, to its other eXtreme position shown in Fig.1.

The shape of the slot 26 in the segmental gear 26 at each end is such,that the beginning of the movement of the segmental gear 26, will,through the pin 30 on the lever 30, move the lever 30, and through theconnector 34 move the clutch lever 35 and clutch 23 into itsintermediate or inoperative position, leaving both gears 11 and 12 looseon the shaft 13. segmental gear 26, the pin 30 on the lever 30 willtravel in the slot 26 intermediate its ends, which is concentric withthe axis of the gear, so that there will be no movement of the lever 30,but during this time the bevel gear 26 will be in mesh with the bevelgear 28, and will cause one complete revolution of said gear 28, andalso of the shaft 13, and through connections to the dobby pattern chaincylinder 22 will move said cylinder back one pick.

In the continued movement of the ,through connector 34 causes the clutchlever 35 to be moved, and the clutch 23 to engage with the bevel gear11, as shown in Fig. 2. The pattern chain will now be turned in theopposite direction as far as desired, and the loom operated to find thepick, and after the pick is found, the segmental gear 26, through thehandle 27, is moved in the opposite direction, and to the position shownin Fig. 2, and the movement of said segmental gear 26 will cause themovement of the lever 30, and through connector 34 the movement `of theclutch lever 35, to move the clutch into its intermediate position, andthe engagement of the segmental gear 26 with the bevel pinion 28 willgive one revolution to said gear 28 and to the shaft 13, and throughconnections to the cylinder 22 move said cylinder forward one pick, andthe continued movement ofthe segmental gear 26 will, through the pin 30on the lever 30 entering the offset end of the slot 26, move the clutch23 into engagement with the gear 11, and cause the pattern chain to beoperated in the normal way.

The inner recess 33 in the arm34 may be engaged with the headed bolt 32and the clutch lever 35 and clutch 23 will be held in their intermediateposition, and out of engagement with both gears 11 and 12, leaving saidgears loose on the shaft 13, so that the pattern cylinder can be rotatedin either direction by the hand wheel, not shown, on the worm shaft 18,as will be well understood.

The advantages of my improvements will be readily appreciated by thoseskilled in the art.

The weaver by means of the segmental gear 26, operated in this instanceby the handle 27, can by one movement of said handle, and at one`operation, move the dobby pattern chain cylinder back one pick,

and. then operate the reverse mechanism, to

IOO

cause the reverse motion of the pattern chain cylinder, and can alsomove the pattern chain cylinder forward one pick, and then operate thereverse mechanism, to cause the forward motion of the pattern chaincylinder.

It will be understood that the details of construction of myimprovements may be varied if desired.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is 1. In a pick finder meehanismof a loom,

the combination with a pattern chain cylinder, connections intermediatesaid cylinder bevel gear, and a clutch splined on said shaft, and aclutch lever for moving said clutch to cause the rotation of said shaftin one direction or the other, of manually operated means for movingsaid clutch, first into its inoperative`and then into its operativeposition, and for revolving said shaft in one direction or the other,While the clutch is in its inoperative position, said means consistingof a gear manually operated and adapted to engage a gear on said shaftto rotate said shaft, and connections from said manually operated gearto said clutch lever to move the same.

2. In a pick finder mechanism of a loom, the combination With a patternchain cylinder, connections intermediate said cylinder and a rotaryshaft, and said shaft, tWo bevel gears loose thereon and meshing Withand driven by a third bevel gear, and said third bevel gear, and aclutch splined on said shaft, and a clutch lever for moving said clutchto cause the rotation of said shaft in one direction or the other, ofmanually operated means for moving said clutch first into itsinoperative and then into its operative position, and for revolving saidshaft in one direction or the other While the clutch is in itsinoperative position, said means consisting of a segmental gear manuallyoperated, and adapted to engage a gear on said shaft, and said gear onsaid shaft, said segmental gear having a slot therein, a portion ofWhich is concentric With the axis of the gear, and the tWo ends of Whichare offset and non-concentric With the axis of the gear, a pin extendingin said slot and carried on a lever, and said lever, and a connectionfrom said lever to the clutch lever, i

3. In a pick finder mechanism of a loom, the combination with a patternchain cylinder, connections intermediate said cylinder and a rotaryshaft, and said shaft, tWo bevel gears loosethereon and meshing With anddriven by a third bevel gear, and said third bevel gear, and a clutchsplined on said shaft, and a clutch lever for moving said clutch, tocause the rotation of said shaft in one direction or the other, ofmanually operated means for moving said clutch, first into itsinoperative and then into its operative position, and for revolving saidshaft in one direction or the other While the clutch is in its inopativeposition, said means consisting of a segmental gear manually operated,and adapted to engage a gear on said shaft, and said gear on said shaft,said segmental gear having a slot therein, a portion of which isconcentric With the axis of the gear, and the tWo ends of Which areoffset and non-concentric With the axis of the gear, a pin extending insaid slot andcarried on a lever, and said lever, and an adjustableconnection from said lever to the clutch lever.

4. In a pick finder mechanism, a rotating shaft, a sliding clutch,oppositely moving gears loose on said shaft, eitherone adapted to beengaged by said clutch, manually operated means for moving said clutchand turning said shaft at one operation.

f EPPA H. RYON.

IVitnesses:

Jol-IN C. DEWEY, M. IIAAs.

